Photographic-printing apparatus.



No. 776,436. PATENTED NOV. 29, 1904 J. H. STARK & 0. G. BAROUS.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED MAY 26.1903. RENEWED MAY 4, 1904. no MODEL. 2SHEETS-SHEET 1.

No. 776,436. PATENTED NOV. 29, 1904. J. H. STARK & O. G. BARGUS.

i PHOTOGRAPHIO PRINTING- APPARATUS.

APPLIOATIOH FILED MAY 26. 1903. RENEWED MAY 4, 1904.

NO M 2 SHEETS-SHEET Z.

UNITED STATES Patented November 29, 1904.

PATENT OFFICE.

JOSEPH H. STARK AND CHARLES Gr. BARCUS, OF PHILADELPHIA, PENNSYLVANIA.

PHOTOGRAPHlC-PRINTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 776,436, dated November29, 1904.

Application filed May 26, 1903. Renewed May 4, 1904. Serial No. 206,367-(No model.)

To all whom, it Wmty concern:

Be it known that we, J osnrn H. STARK and CI-IARLEs G. BARoUs, citizensof the United States, and residents of Philadelphia, Pennsylvania, haveinvented certain Improvements in Photographic-PrintingApparatus,of whichthe following is a specification.

Our invention relates to certain improvements in apparatus for printingfrom a plate by means of solar or other light; and it consists moreparticularly in an improved machine for printing directly upon thesensitized surface of a cylindrical roll from a fiat plate or negativecontaining the image whose likeness it is desired to reproduce.

The object of the invention is to provide a device by the use of whichit shall be possible to form an image or series of images upon thesensitized surface of a cylindrical roll, which roll after beingsubjected to suitable treatment shall be available for printing in anyof the well-known ways. This object we secure as hereinafter set forth,reference being had to the accompanying drawings, in

Figure 1 is a side elevation of our improved printing-machine. Fig. 2 isan end elevation of the same. Fig. 3 is a sectional elevation taken onthe line 3 3, Fig. 2; and Fig. A is a sectional elevation taken ontheline i 4, Fig. 1.

In the above drawings, A is the supportingbase of the machine, carryingtwo upwardlyprojecting standards a, provided at their upper ends withbearings for the accommodation of trunnion-screws a and a for thesupport of the main framework or casing B of the device. Thetrunnion-screw a has fixed to it a segmental rack a whose teeth areongaged by a worm a, supported in bearings cf on the standard a, theworm-shaft a being extended and provided with a crank-handle a wherebyit may be revolved in order to swing the trunnion-screw a and with itthe casing B. This casing may be described as consisting of a box orinclosed portion having at the sides of its upper part guideways b forthe accommodation of the plate-carrying frame D, which is free to slidetherein, such sliding motion, however, being controlled by means of thescrew (Z, movably held to the casing B by a pin d, as shown in Fig. 3,and passing through a threaded nut (Z supported on a projection (Z ofthe frame D.

As shown in Fig. 3, there are guides 6 upon the interior of the sides ofthe box-like portion of the casing B, and these extend in a directionsubstantially at right angles to the ways 6, said guides being providedfor a frame 0, which carries trunnion-screws 0 for supportinga roll E.These trunnion-screws preferably pass through threaded projections ofthe frame C and are provided with jam-nuts 0 whereby they are retainedin any adjusted position. The outer ends of said screws are squared forthe reception of a wrench and project through slots or openings in thecasing B, so as to be accessible when it is desired to insert or removeone of the rolls E. An adjusting-screw c movably engages the lowerportion of the frame C and passes through a threaded opening in thebottom of the casing'B. having fixed to it a small hand-wheel 0",whereby it may be turned to move said frame.

The roller E is provided with a supportingshaft 6, whose ends arerecessed for the reception of the trunnion-screws c, and there are fixedto said shaft wheels 6, whose peripheries are comparatively rough, beingdesigned for engagement with similarly roughened strips 12*, fixed tothe under side of the frame D. As shown in Fig. 3, this frame isprovided with angle-strips (Z extending along the ends of the openingfor the accommodation of a plate F to be printed from, said strips beingprovided with a flange d along their lower edges, upon which the saidplate rests. Spring-pieces (Z are employed to yieldingly hold the plateF in position within the frame. To the exterior of the sides of thecasing B are held two guide-standards G, by means of screws 9, the lowerportion of said standards being in the present instance made open, so asto permit the passage and movement of the trunnion-screws c. The upperends of the standards are slotted for the accommodation of a flat pieceH, whose ends enter and are guided therein, and this piece carries atsubstantiallyits central portion a light hopper or box it, which whilebeing substantially rectangular in section decreases from its outeropening toward its inner end. Said inner end rests upon the plate F tobe printed from, and the box it fits closely the suitably-formed openingfor it made in the frame D. It will therefore be seen that the openingin the frame has a Width equal to the length of the light hopper or boxand alength substantially the same as the length of the plate to beprinted from, the width of the said plate being but slightly greaterthan the length of the lightbox.

In using our improved form of printing apparatus the surface of the rollE is provided with a light sensitive coating of such compo sition thatexposure to diffused light for a short time does not deleteriouslyaffect it, and the roll is put in position after the frame D has beeneither removed or run out of the way, the trunnion-screws 0 beingadjusted so that it is free to turn. The plate F is then placed inposition in the frame D, and in order to do this the light-box h islifted upwardly or, if desired, removed, so that the plate may beslipped under the springs (Z and permitted to rest upon the edges d ofthe supportingstrips (Z The light-box is held tightly in position uponthe plate by means of springs it, each of which extends between a pin 71projecting from the piece H, and a pin g", fixed to the standard Gr. Thescrew 0 is then turned by means of the hand-Wheel 0 thereby movingupwardly the frame C and the roll E, so as to bring the surface of thislatter into intimate contact with the under or film side of the plate F,it being noted that the Wheels 0 are also brought into intimate contactwith the strips cl of the frame D. The exposed upper surface of theplate on both sides of the light-box /z is then loosely covered with alight-excluding cloth, and a strong light, either from an arc-lamp ordirectly from the sun, is allowed to pass into the light-box it. Suchlight passing through the plate F chemically acts upon the substancescomprising the coating of the roll E, and the plate (Z is caused touniformly move under the lighthopper by turning the Wheel (Z and sincethe strips (F upon the frame D are in contact with the rough peripheriesof the wheels a said Wheels and the roller E are caused to turn at sucha rate that there will be no slipping of the said roll and the plate F,there thus being transferred to the roll the image carried by the plateF.

It will be understood that the plate or nega- 5 tive is previouslyprepared in such manner that its length will be equal to thecircumference of the roll E, so that the ends of the image or designupon the plate will register with each other upon the roll. After theprinting the roll E is removed from the apparatus and developed in thewell-known m anner, there thus being produced a picture upon said rollwhich may be etched or otherwise prepared for use in printing on paperor textile material.

WVe claim as our invention 1. The combination in a photographic devicefor printing on a cylindrical surface, of means for carrying a plate tobe printed from, means for directing a body of light through the plateand onto a cylindrical surface to be printed upon along the line ofcontact between the plate and said surface, and means for moving theplate over said surface to be printed upon, substantially as described.

2. The combination in a photographic-printing device, of means forcarrying a plate to be printed from, means for moving the plate over thesurface of a roll to be printed upon, with means for directing a body oflight through the plate and onto the roll along the line of contactbetween the plate and the roll, substantially as described.

3. The combination in a machine for printing from a flat plate, of aframe, a holder for the plate supported so as to be movable therein,means for supporting-a roll having a light sensitive surface so that itwill contact with the surface of the plate, means for directing lightthrough the plate and upon the roll along the line of contact of saidplate and roll, said light-directing device and the roll beingstationary relatively to the plate, substantially as described.

f. The combination of a supporting-frame, means carried by said framefor rotatably supporting a roll having a sensitized surface, a holderfor a plate to be printed from, movably carried by the frame and guidedtherein so as to be movable in a plane parallel to the axis of theroller, with means for moving the plate-holder, and means for directinglight through the plate onto the roller, substantially as described.

5. The combination of a frame,means thereon for carrying a roller havinga light sensitive surface, a light-hopper also carried by the frame,said hopper having an opening directed toward the surface of the roll,and means carried by the frame for supporting a plate to be printedfrom, so that said plate will extend between the roll and thelighthopper, and means for moving the plate over the surface of theroll, substantially as described.

6. The combination of a main frame, a second frame adjustably carried bysaid main frame, means on the second frame for revolubl y supporting aroll, a light-hopper carried by the main frame and having an openingextending parallel to the axis of the roller, a plate-holder alsocarried by the frame having means for supporting a plate to be printedfrom between the plate-holder and the roller, with a device for movingthe plate-holder relatively to the main frame so as to cause the roll torevolve, substantially as described.

7. The combination of a main frame, having means for carrying a roll tobe printed upon, a plate-holder, means for supporting a plate thereinparallel to the axis of the roll, and wheels attached to theroller-shaft and placed to contact with the plate holder wherebymovement of said holder will cause revolution of the roll, substantiallyas described.

8. The combination of a main frame, a second frame carried thereby, ashaft in the second frame for carrying a roller to be printed upon, anda Wheel or wheels on said shaft, a plate-holder supported on the firstframe, means thereon for carrying a plate to be printed from, in suchposition that it will contact with the surface of the roll, saidplate-holder having portions coacting with the wheel or wheels on theshaft whereby movement of said plate-holder will cause revolution of theroll, substantially as described.

9. The combination of a main frame, having means for carrying a rollprovided with a sensitive surface, a movable holder for carrying a plateto be printed from, said holder being constructed so as to cause theplate to contact With the surface of the roll, means for supporting saidmain frame upon a horizontal axis, and means for turning said frame onsaid axis, substantially as described.

10. The combination of a main frame, a second frame guided thereinhaving means Whereby its position may be adjusted, a shaft for a roll tobe printed upon carried by the second frame, a plateholder carried bythe main frame and constructed to support a plate in contact with theroll, and a device connecting the plate-holder and the main framewhereby said holder may be caused to move and thereby cause the platecarried by it to pass over the surface of the roll, substantially asdescribed.

11. The combination of a main frame having means for carrying a rollwith a sensitized surface, a light-box having an opening parallel to theaxis of the roll, a plate-holder having means for carrying a platebetween the roller and the light-box, and means for retaming saidlight-box in yielding contact with the surface of said plate, and meansfor moving the plate over the surface of the roll, substantially asdescribed.

12. The combination of a main frame,a lightbox carried thereby, a secondframe carried by the main frame and provided with means for supporting aroll, a plate-holder having means for supporting a plate between thelight-box and the roll, with means for moving said roll toward and fromthe plate, and means for moving the plate over the surface of the roll,substantially as described.

13. The combination of a main frame, a second frame adjustably carriedthereby, a pair of bearings on the second frame, a shaft supported insaid bearings for carrying a sensitized roll, said holder being movablein a plane parallel to the axis of the shaft, a light-box extendingthrough an opening in the holder and having an opening also parallel tothe axis of said shaft, said parts being arranged so that the plate tobe printed from is carried by the holder between the light-box and theroll, substantially as described.

14. The combination of a base having standards, a main frame supportedupon said standards so as to be free to move on a horizontal axis, a setof guides on the main frame, a second frame movable in said guides andprovided with means for carrying a roll with a light sensitive surface,means for adjusting the position of the second frame, a second set ofguides on the main frame, and a plateholder movable therein constructedso that it will support a plate in contact with the surface of the roll,a light-box having an opening extending parallel to the axis of theroll, a plate carried between said light-box and the roll, and a thirdset of guides carried by the main frame, with means connected to thelightbox and extending into said guides controlling the direction ofmotion of said box, substantially as described.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

JOSEPH H. STARK. CHARLES G. BARCUS. WVitnesses:

RALPH W. EBY, J. R. MARTIN.

